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Once again Camcorders distort images. Camcorders have software to compensate for user stupidity. Much in the same way that your brain will force you to perceive a image in an incorrect manner to align it with a preconceived notion. Such as in the case of optical illusions.

Optical illusions happen when you perceive something that isn't true to what the actual image is. For instance look at the moon as it is rising, and then look at the moon a few hours later. You will notice something curious the rising moon looks much bigger then the moon that is high in the sky. In fact the closer the moon is to the ground the larger it appears to you. However with simple thumb measurements you will discover that the moons size has not changed.

In fact thanks to your knowledge of Astronomy you know it is utterly impossible. The Moon has a nearly circular orbit. However if you believed your eyes you would think it was three times closer to the planet early in the night. The reason you perceive this is, because your brain interprets images, and places them into the context of normal experience.

A camcorder does much the same thing it wasn't designed to film objects thousands of feet away. Thus when it is asked to do so it applies the same programs to correct for imaging in a room that may be too dark, or which might have a bright light in the corner, but a dark corner in the other side of the room. Were the camera not to compensate for such bad filming conditions the films of a family get together might look very bad.

The average camcorder was not designed to take these images, and so it does a poor job of making the necessary corrections. The Zoom function was never intended to be used on distant objects, but objects within less then fifty feet. You can easily defeat a camcorder and that is why camcorder video is considered by most scientists to the worst method of evidence gathering.

Yes there are cameras you can buy expressly for the purposes of observing aerial phenomena. There is a reason Storm chasers, backyard meteorologists, and amateur astronomers do not use, or like to use camcorders. They screw the job up.